1 /*-
2 * Copyright (c) 1997 Jonathan Lemon
3 * All rights reserved.
4 *
5 * Derived from register.h, which is
6 * Copyright (c) 1996 Michael Smith. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31
32 #ifndef _MACHINE_VM86_H_
33 #define _MACHINE_VM86_H_ 1
34
35 /* standard register representation */
36 typedef union {
37 u_int r_ex;
38 struct {
39 u_short r_x;
40 u_int :16;
41 } r_w;
42 struct {
43 u_char r_l;
44 u_char r_h;
45 u_int :16;
46 } r_b;
47 } reg86_t;
48
49 /* layout must match definition of struct trapframe_vm86 in <machine/frame.h> */
50
51 struct vm86frame {
52 int kernel_es;
53 int kernel_ds;
54 reg86_t edi;
55 reg86_t esi;
56 reg86_t ebp;
57 reg86_t isp;
58 reg86_t ebx;
59 reg86_t edx;
60 reg86_t ecx;
61 reg86_t eax;
62 int vmf_trapno;
63 int vmf_err;
64 reg86_t eip;
65 reg86_t cs;
66 reg86_t eflags;
67 reg86_t esp;
68 reg86_t ss;
69 reg86_t es;
70 reg86_t ds;
71 reg86_t fs;
72 reg86_t gs;
73 #define vmf_ah eax.r_b.r_h
74 #define vmf_al eax.r_b.r_l
75 #define vmf_ax eax.r_w.r_x
76 #define vmf_eax eax.r_ex
77 #define vmf_bh ebx.r_b.r_h
78 #define vmf_bl ebx.r_b.r_l
79 #define vmf_bx ebx.r_w.r_x
80 #define vmf_ebx ebx.r_ex
81 #define vmf_ch ecx.r_b.r_h
82 #define vmf_cl ecx.r_b.r_l
83 #define vmf_cx ecx.r_w.r_x
84 #define vmf_ecx ecx.r_ex
85 #define vmf_dh edx.r_b.r_h
86 #define vmf_dl edx.r_b.r_l
87 #define vmf_dx edx.r_w.r_x
88 #define vmf_edx edx.r_ex
89 #define vmf_si esi.r_w.r_x
90 #define vmf_di edi.r_w.r_x
91 #define vmf_cs cs.r_w.r_x
92 #define vmf_ds ds.r_w.r_x
93 #define vmf_es es.r_w.r_x
94 #define vmf_ss ss.r_w.r_x
95 #define vmf_sp esp.r_w.r_x
96 #define vmf_ip eip.r_w.r_x
97 #define vmf_flags eflags.r_w.r_x
98 #define vmf_eflags eflags.r_ex
99 };
100
101 #define VM86_PMAPSIZE 3
102 #define VMAP_MALLOC 1 /* page was malloced by us */
103
104 struct vm86context {
105 int npages;
106 struct vm86pmap {
107 int flags;
108 int pte_num;
109 vm_offset_t kva;
110 u_int old_pte;
111 } pmap[VM86_PMAPSIZE];
112 };
113
114 #define VM_USERCHANGE (PSL_USERCHANGE | PSL_RF)
115 #define VME_USERCHANGE (VM_USERCHANGE | PSL_VIP | PSL_VIF)
116
117 struct vm86_kernel {
118 caddr_t vm86_intmap; /* interrupt map */
119 u_int vm86_eflags; /* emulated flags */
120 int vm86_has_vme; /* VME support */
121 int vm86_inited; /* we were initialized */
122 int vm86_debug;
123 caddr_t vm86_sproc; /* address of sproc */
124 };
125
126 struct i386_vm86_args {
127 int sub_op; /* sub-operation to perform */
128 char *sub_args; /* args */
129 };
130
131 #define VM86_INIT 1
132 #define VM86_SET_VME 2
133 #define VM86_GET_VME 3
134 #define VM86_INTCALL 4
135
136 struct vm86_init_args {
137 int debug; /* debug flag */
138 int cpu_type; /* cpu type to emulate */
139 u_char int_map[32]; /* interrupt map */
140 };
141
142 struct vm86_vme_args {
143 int state; /* status */
144 };
145
146 struct vm86_intcall_args {
147 int intnum;
148 struct vm86frame vmf;
149 };
150
151 extern int in_vm86call;
152
153 struct proc;
154 extern int vm86_emulate __P((struct vm86frame *));
155 extern int vm86_sysarch __P((struct proc *, char *));
156 extern void vm86_trap __P((struct vm86frame *));
157 extern int vm86_intcall __P((int, struct vm86frame *));
158 extern int vm86_datacall __P((int, struct vm86frame *, struct vm86context *));
159 extern void initial_bioscalls __P((u_int *, u_int *));
160 extern vm_offset_t vm86_getpage __P((struct vm86context *, int));
161 extern vm_offset_t vm86_addpage __P((struct vm86context *, int, vm_offset_t));
162 extern int vm86_getptr __P((struct vm86context *, vm_offset_t,
163 u_short *, u_short *));
164
165 extern vm_offset_t vm86_getaddr __P((struct vm86context *, u_short, u_short));
166
167 #endif /* _MACHINE_VM86_H_ */
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